Pulley



(No Model.)

R. GILLHAM.

. PULLBY. No. 412,335. Patentedvct. 8, 1889.

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@ai Y J UNrrnD STATES PArnNr @irren HUBERT GILLI'IAM, OF KANSAS CITY, MISSOURI.

PU LLEY.

SPECIFICATION forming part of Letters Patent No. 412,335, dated October 8, 1889.

Application led January 7, 1889. Serial No. 295,637. No model.)

To @ZZ zrv'tom t may concern;

Be it known that I, ROBERT GJLLHAM, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Pulleys; andI do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming a part of this specification.

The object of my invention is, first, to change the peripheral bearing depression in a pulley in the line of its axis to meet the alternate changes in position of a traveling cable in which the pulley is in line, and, second, to enable the series of rings in the periphery of the pulley to be drawn in close relation between the detachable parts.

My invention further consists in the novel construction and combination of parts, which Will be rst fully described, and specifically pointed 'out in the claims.

Figure l is a view of the pulley in a hori- Zonta-l position and partly in vertical section, showing a series of interchangeable rings broken away on the periphery of the pulley, the removable flanged section and securingbolts', and the means whereby the rings are keyed upon the periphery of the pulley. Fig. 2 Vis a View of the pulley similar to that seen in Fig. l, with the rings removed. Fig. 3 is a horizontal sectional View of the pulley, taken upon theline a: o of Fig. l. Fig. 4 is a plan View of the pulley, as seen in Fig-.2. Fig. 5 is a det-ail View of the periphery of the pulley, showing the transverse fiange and a portion of one of the grooved rings.

Similar letters of reference indicate correspending part-s in all of the figures.

Referring to the drawings, A represents a horizontal drum-shaped pulley in separate parts A A2. is made with a wide periphery a, at right angles to which from the edge portion on the lower side of the pulley extends circumfer entially the iange 0,',

B is the hub, which extends in the direction of its axis a distance corresponding to the width of the periphery a of the pulley, Extending radially from the hub B, 'from a The portion A of the pulley' point equally distant from its opposite ends to a point intermediate from the edges of periphery a of the pulley, is cast or'formed the web C, and extending radially from the end portion of the hub B to the periphery a upon the side of the pulley opposite to that having flange a' is cast or formed the wel) G. EX- tending from the huh B, in the direction of its axis and at right angles to and from the opposite sides of theV Webs C to the Web C' in one direct-ion and to the end of ,the hub Bin another direction, and radially from said hub to the periphery uY of the pulley, are cast or formed the Walls D D, the edge portions of which opposite the web G', and also extending outwardly from web C, are cutaway at CZ from the hub B to the periphery al in an in- Wardly-curved direction toward the Web C.

The portion A2 of the pulley is detachable from the portion A', and consists of a narrour peripheral portion u?, corresponding in diameter to the periphery c, and from the edge portion of the detachable part of the pulley A2 extends circumferentially a suitable ange a3. Said portion A2 of the pulley is made with a short hub B', and extending radiallyfrom said hub to the edge of the peripheral portion a2, opposite and to provided with the flange c3, is cast or formed integral therewith the web C2, so that when the parte A' A2 of the pulley are joined together the webs C' C2 are in close relation. In the peripheral portion u, c? of the pulley at the line ctx of division between the separate parts A' Agof the pulley is made a concentric groove c4. Upon the outer surface of the periphery c of the portion A', and also on the periphery a2 of the portion A2 of the pulley and in a transverse relation are cast or formed the iianges a5 a5, which are placed a suitable distance apart in relation to each other and in line with respect to the separate parts A' A2 of the pulley.

The bea-rngsurface of the pulley consists of a series of concentric interchangeable rings E E, of uniform Width, the diameter of which slightly exceeds that of the periphery of the parts A' A2 of the pulley. In the ring E, which is in line with the traveling cable, is made the concentric groove e. As many of the rings as desired may be grooved in a corresponding manner, so as to be interchangeable with a ring which has become Worn. In a trans` IOC verse relation to and in the innerside of the rings E E are cut, at the relative distances apart to the flanges a5 on the periphery of the pulley, the grooves e e', so that when the rings are placed upon vthe pulley the said grooves Willv register With the flanges a5 and key the rings in place. The rings E are first placed on the portion A of the pulley in successive order, the grooved ring taking a place against the iiange a', or at any desired height, and at the point of division between the separate parts of the pulley the ring E is then placed over the groove a4. The portion A2, which is also provided With a ring E, is then laid upon the portion A of the pulley, so as to bring the rings closely together. Through the Webs C C2, at short distances radially from the hub B and the periphery a, is made the perforations c c, through which are 'inserted the screw-threaded bolts F F, upon the ends of which bolts are the heads f f, and upon the opposite ends are the nuts ff. As the nuts f f are turned upon the bolts F F the Webs C C2 are drawn closely together and the rings upon the portion of the grooved periphery a? of detachable part A2 and also the rings upon the portion A on the periphery Lof the pulley are drawn closer in relation to each other, thus obviating the necessity of placing Washers between the said rings.

In the construction of the pulley, as hereinbefore described, a saving is effected over the old forms of pulley, which is discarded when the groove has become so Worn as to peneunts theln for use are replaced With less eirpense and readily adapted to the plane of the traveling cable, Which in the conduits of cable railways, to which the pulley is particularly of service, the varying requirements are subserved.

Having fully described my invention, what I now claim as new, and desire to secure by Lett-ers Patent, is

l. The combination, with a pulley having a flanged peripheral portion, of a series of interchan geable rings keyed to the said peripheral portion, substantially as shown and described.

2. A pulley having its peripheral portion provided With transverse ian ges, in combination With a bearing composed of interchangeable rings, said rings having transverse grooves adapted to register with and receive said anges, as shown and described.

3. A pulley consisting of separate detachably-secured parts having a transverse flange, and a peripheral bearing consisting of a series of interchangeable rings, said pulley hav- -ing a concentric groove in the periphery and at the line of division of said detachable parts, for the purpose described.

ROBERT GILLHAM. Vitnesses:

E. C. TovY, S. L. C. HAssoN. 

